Mix 2 audio channel

[barabba2005]

I created this script to export a stereo audio channel:

StartInfo.FileName = "C:\Program Files (x86)\VideoLAN\VLC\vlc" & """" & " --audio-track=1" & "" & " -I dummy -vvv " & """" & MyPathandFilename _
& """ --sout=#transcode{acodec=s16l,channels=2,ab=128,samplerate=48000}:standard{access=file,mux=wav,dst=" _
& """" & MyFileName & """" & "}" & " vlc://quit"


my problem is that I have to 2 mono channel in input and i must mix it.

it is possible ?

thanks